Improvement in rotary steam-engines



DI.` PETERS, PROTCLLITMOGRFHER, WASHINGTONy UC.

ne. i i

- stent it To 'all '-whornftt mary concern:

the steam-chest, represented by the letterb.

` .LEWIS MitreHELL` AND LEVI STONE, OF MOUNT VERNON, OHIO.

l Letters Patent No. 94,906, dwtedSeptembeklft, 1869.

\ iMrRovnMr-.NT 1N ROTARY sfrnain-Einerna-ES.v

The Schedule referred 'to in these Letters Patent and making part of the same.

Be it known that we,LEW1` s H. MITCHELL and LEVI STONE, of Mount Vernon, in the county of Knox,

i v.and State of Ohio, haveinvented a new and valuable Rotary Steam-Engines; and we dov Improvement `in hereby declare that the following is a full, clear, and exactdescrlption ofthe construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon. Figure l, of the drawings, is a plan view of my invention. 1

Figure2 `is a side view, withua portion brokenfbii'. Figures 3, 4, 5, 6, and 7,' are details. Our invention relates to steam-engines; and It consists mainlyrin the construction and novel 'arl' rangement of devices intended to securethe benefits of both .the eirpansive andreactive powerof the steam.

The letter A, of `the drawings, represents a steam` chest,` and v Letter B,the pipe, for steam leading thereto. l

The letter O represents a sliding valve, working in said steam-chest by means of the pistone.

Wemake an opening in the centre of the bottom of We also make two openings in the `front part of the bottom of the steam-chest, and two similar openings in thebottom thereof, at its rear, to allow the passage of steam, as hereinafter mentioned. 4 The openings in the front part oi' said bottom `are shownby` the lettere, and those in the rear bythe letter d.

The opening b leads to the exhaust-pipe D.`

We place alvalve inone of theopenings, d, the

handle of which 'is shown at'j; to aid in regulating the movements of the steam from the-chamber. The letter Erepresents the cylinder, and

Letter F, the arm rotating. therein.

This arm is fullyrepresented by g. 55, the letters g being openings through `which the steam passes from thehollow head h. i

\ vClhe letter G rjis the shaft of our engine, and

The letter thereof.

The 1letter K represents an eccentric, axed to shaft G, and operating as hereinafter stated.

The letters l? `represent sliding .bars or abutments, arrangedto work in andmnt of thefcylinder, by means of rods 'i and rollers I, by which they arerespectively connected with `the groove-in the eccentric K, as`

shown. o i

By' this arrangement each sliding abutment passes in and out ot' the cylinder at each.' revolution ot' the shaft, and is regularly drawn out of the wayot' the rel volving arm F as it approaches,` thereby always keep`` ing the cylinder divided into two compartments, each of which covers one-half part thereof. l

. The letterR'represents a plate, attached to the front n, placed as shown, the supply always coming through either the openings c or d,`as` the operator may direct, and the exhaust passing oi through the others.

,- .A reverse motion of the engine is secured by operating the valves tothe' openings c and d, at will'.

. ..'Wh at we claim vas our invention, and desire to' secure by Letters Patent, is-

1. The `construction and arrangement of the revolving arm F, with reference to passages candfd, slibstantially as described.

2. The construction and arrangement ot' the valves C,f,'anf1n, with reference tothe openings c andl d, substantially as specified.l f-

In testimony that we claim the above`,'we have heren unto subscribed our.names,in .the presence of two`wit` HESSQSQ Witnesses: vvLEVI s'rONE.l

HENRY T. PORTER,

J AMES GILLAN.

.LEWIS H. MITCHELL.

Hf, the belt-drum, attached to the end 

